GB1320236A - Apparatus for controlling movement of cars on a track of a baggage transporation system - Google Patents

Abstract

1320236 Track propulsion systems REX CHAINBELT Inc 1 Dec 1970 [19 Dec 1969] 56935/70 Heading B7L Apparatus for controlling movement of cars 5 along a track 3 includes rollers 7 having axes inclined with respect to the track, the rollers engaging elongate reaction tubes 6 on the cars to drive them along the track. The tubes 6 are rotatable about their longitudinal axes. The rollers 7 are spaced at distances equal to a car's length and are mounted on a frame 10 which, in turn, is mounted on cross ties 13 of the track and is capable of limited longitudinal movement under the influence of a piston and cylinder 20. A stop 33 for the first of a row of parked cars 5 is provided, it being pivotally connected to a cross tie 13 and mechanically linked to frame 10 by a link bar 30. When the beam between a light source 28 and photocell 26 is uninterrupted the stop 33 is held in its obstructing position. Upon a command signal the piston and cylinder 20 moves frame 10 to the right so that the stop is removed from the cars' path and at the same time rollers 7 engage tubes 6 to move the cars 5 forward. The roller 7 adjacent stop 33 has its axis more inclined to the track axis than the other rollers and thus moves the first car faster than the others. After the first car has moved away, the beam 28 is again uninterrupted and a signal is relayed to piston 20 to move the frame leftwards to reposition stop 33.